ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,464,284, issued on Nov. 4, was assigned to Alps Alpine Co. LTD. (Tokyo).
"Communication support system" was invented by Ryosuke Tachi (Fukushima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An assist band is set to a standard band when there is no large road noise, and is set to a treble band not including a low frequency band but including a high frequency band as compared with the standard band when there is a large road noise. In audio data of a front seat microphone, components outside the assist band are cut by an IIR filter, downsampled by a downsampling unit to a sampling frequency that is twice the upper limit of the assist band, process...